{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["concept or principle", "machanical property", "material", "enabling technology", "machine or equipment", "application"], "input": "Present work investigated the use of Cold Metal Transfer ( CMT ) welding for additive manufacturing of copper‑aluminum alloys with addition of silicon in small amount ."}
{"concept or principle": [], "machanical property": [], "material": ["alloys", "silicon"], "enabling technology": [], "machine or equipment": [], "application": []}